SHANNON Margaret Therese Huth may be cleaning her own room from now on after a find by her grandmother landed the 17-year-old in court.

The local girl pleaded guilty in the Warwick Magistrates Court on Wednesday to one count of possessing tainted property after a backpack containing a laptop and accessories was handed into the police station.

Suspicion was first raised when Huth's grandmother found a backpack with a laptop and accessories under the defendant's bed.

The grandmother, who did not recognise the items as belonging to Huth or her boyfriend, handed them into the police station.

After inspection, officers discovered the items were reported to have been stolen from a home during a break and enter in early April

however the defendant alleged she had no knowledge of where the items had come from.

Instead, in a statement read out in court, Huth told police she had found the laptop by the Condamine River.

Police prosecutor Sergeant Ken Wiggan told the court that during an interview the defendant could not recall the date or time she found the items and could not give any further information on the subject.

Huth also stated to police she had nothing to do with the break and enter but took the items home to show her boyfriend who also lives with her and her grandmother.

However the young woman did inform the officers she had never intended to return the items.

After consideration of the evidence and Huth's previous convictions Magistrate Graham Lee warned her of any future involvement with stolen property.

"You are still very young, you just turned 17 earlier this year," he said.

"You need to make sure you keep your nose clean - stay out of trouble".

Huth was fined $300 and her conviction was recorded.

Anyone with information about a crime in the area should contact Crime Stoppers via 1800 333 000 or crime stoppers.com.au 24 hours a day.

Information can be given anonymously.